On Sun, Jan 11, 2026 at 02:59:17PM +0100, Marnix Rijnart wrote:
v1: https://patch.msgid.link/20250923221756.26770-1-marnix.rijnart@iwell.eu Changes:
- Added fixes tags
- Cc stable
Commit 4afeced ("serial: core: fix sanitizing check for RTS settings")
Please use more digits here, "4afeced55baa", like you did in the Fixes: lines.
introduced a regression making it impossible to unset SER_RS485_RTS_ON_SEND from userspace if SER_RS485_RTS_AFTER_SEND is unsupported. Because these devices need RTS to be low on TX (fecf27a) they are effectively broken.
The hardware supports both RTS_ON_SEND and RTS_AFTER_SEND, so fix this by announcing support for SER_RS485_RTS_AFTER_SEND, similar to commit 068d35a.
You can line-wrap at 72 columns, and again, use more digits for the commit, and spell out the full name of the commit.
Fixes: 4afeced55baa ("serial: core: fix sanitizing check for RTS settings") Fixes: fecf27a373f5 ("serial: 8250_pci: add RS485 for F81504/508/512") Cc: stable@vger.kernel.org
So where does this need to be backported to, where the first commit is, or the second?
thanks,
greg k-h